WO2022134201A1

WO2022134201A1 - Dual-fuel gas dynamic device

Info

Publication number: WO2022134201A1
Application number: PCT/CN2021/000244
Authority: WO
Inventors: 李华玉; 李鸿瑞
Original assignee: 李华玉
Priority date: 2020-12-24
Filing date: 2021-12-24
Publication date: 2022-06-30

Abstract

The present invention belongs to the technical field of thermodynamics and thermal dynamics. Provided is a dual-fuel gas dynamic device. A low-grade fuel is externally arranged and is in communication with an air heating furnace, an air channel is also externally arranged and is in communication with the air heating furnace by means of a heat source regenerator, and the air heating furnace is also provided with a fuel gas channel that communicates with the outside by means of the heat source regenerator; a high-grade fuel channel is also externally arranged and is in communication with a boiler, an air channel is also externally arranged and is in communication with the boiler by means of a second heat source regenerator and the air heating furnace, and the boiler is also provided with a fuel gas channel that communicates with the outside by means of the second heat source regenerator; a compressor is provided with a circulating working-medium channel that communicates with an expander by means of the air heating furnace and the boiler, and the expander is also provided with a circulating working-medium channel that communicates with the compressor by means of a cooler; the cooler is also provided with a cooling medium channel that communicates with the outside; and the expander is connected to the compressor and transmits power. Therefore, the dual-fuel gas dynamic device is formed.

Description

Dual fuel gas power plant

Technical field:

The invention belongs to the technical field of thermodynamics and thermodynamics.

Background technique:

Cold demand, heat demand and power demand are common in human life and production; among them, the chemical energy of fuel is converted into heat energy through combustion, and then the heat energy is converted into mechanical energy, which is an important means to provide power or electricity to human beings.

There are different types of fuels and different properties, among which the temperature of fuel combustion to form gas is closely related to the conversion efficiency; from the temperature of the gas formed by combustion - such as adiabatic combustion temperature or constant pressure High-grade high-grade fuels correspond to high-grade heat sources and can convert more mechanical energy; while low-grade fuels with low constant-pressure combustion temperature are difficult to form high-temperature combustion products, corresponding to low-grade heat sources, the mechanical energy converted is relatively small. On the other hand, due to the limitation of the working principle, the material properties, or the manufacturing level of the heat exchange equipment, etc., in the gas power plant using high-grade fuel, there is a relatively high temperature in the process of fuel combustion to form a high-temperature heat source. Large temperature difference loss, which brings about large mass loss in fuel utilization.

People need simple, active, safe and efficient use of fuel to obtain power, and the present invention provides a reasonable combination of low-grade fuel and high-grade fuel to achieve learning from each other's strengths and complement each other's advantages, and reduce the irreversible degree of temperature difference in the process of heat source formation. It is a dual-fuel gas power plant that simultaneously improves the utilization efficiency of the two fuels and effectively reduces the fuel cost. Invention content:

The main purpose of the present invention is to provide a dual-fuel gas power plant, and the specific content of the invention is described as follows:

1. The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator and a second heat source regenerator; the external low-grade fuel is connected to the air heating furnace, There is also an external air channel that communicates with the air heating furnace through the heat source regenerator, and a gas channel that communicates with the outside through the heat source regenerator, and an external high-grade fuel channel that communicates with the boiler. The second heat source regenerator and the air heating furnace are connected to the boiler, the boiler also has a gas channel that is connected to the outside through the second heat source regenerator, the compressor has a circulating working fluid channel that communicates with the expander through the boiler, and the expander also has a circulating working fluid The channel is communicated with the compressor through the cooler; the cooler also has a cooling medium channel communicated with the outside, and the expander is connected to the compressor and transmits power to form a dual-fuel gas power device.

2. Dual fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air channel communicates with the boiler through the second heat source regenerator and the air heating furnace, the boiler also has a gas channel that communicates with the outside through the second heat source regenerator, and the compressor has a circulating working fluid channel that communicates with the expander through the regenerator and the boiler. , the expander also has a circulating working medium channel that communicates with the compressor through a regenerator and a cooler; the cooler also has a cooling medium channel that communicates with the outside, and the expander is connected to the compressor and transmits power to form a dual-fuel gas power device.

3. Dual-fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air channel communicates with the boiler through the second heat source regenerator and the air heating furnace, the boiler also has a gas channel that communicates with the outside through the second heat source regenerator, and the compressor has a circulating working fluid channel that communicates with the expander through the regenerator and the boiler. , the expander also has a circulating working medium channel that communicates with itself through the regenerator, and then the expander has a circulating working medium channel that communicates with the compressor through the cooler; the cooler also has a cooling medium channel that communicates with the outside, and the expander is connected to the compressor and Power is transmitted to form a dual fuel gas power plant.

4. Dual-fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; there are low-grade fuel and air outside The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air passage communicates with the boiler through the second heat source regenerator and the air heating furnace. The boiler also has a gas passage that communicates with the outside through the second heat source regenerator. The compressor has a circulating working fluid passage that communicates with the expander through the boiler. The expander also There is a circulating working medium channel that communicates with the compressor through the regenerator and the cooler, and then the compressor has a circulating working medium channel that communicates with itself through the regenerator; the cooler also has a cooling medium channel that communicates with the outside, and the expander is connected to the compressor and is connected to the outside. Power is transmitted to form a dual fuel gas power plant.

5. The dual-fuel gas power plant is mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; there are low-grade fuel and air outside The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air passage communicates with the boiler through the second heat source regenerator and the air heating furnace, the boiler also has a gas passage that communicates with the outside through the second heat source regenerator, and the compressor has a circulating working fluid passage that communicates with the expander through the boiler. There is a circulating working medium channel that communicates with itself through the regenerator, the expander also has a circulating working medium channel that communicates with the compressor through the cooler, and then the compressor has a circulating working medium channel that communicates with itself through the regenerator; the cooler also has a cooling The medium channel is communicated with the outside, and the expander is connected to the compressor and transmits power to form a dual-fuel gas power device.

6. The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator and a second heat source regenerator; the external low-grade fuel is connected to the air heating furnace, There is also an external air channel that communicates with the air heating furnace through the heat source regenerator, and a gas channel that communicates with the outside through the heat source regenerator, and an external high-grade fuel channel that communicates with the boiler. The second heat source regenerator and the air heating furnace are communicated with the boiler, the boiler also has a gas channel that communicates with the outside through the second heat source regenerator, and the compressor has a circulating working fluid channel that communicates with the expander through the air heating furnace and the boiler, and the expander also A circulating working medium channel is communicated with the compressor through the cooler; the cooler also has a cooling medium channel communicated with the outside, and the expander is connected to the compressor and transmits power to form a dual-fuel gas power device.

7. Dual-fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air passage is communicated with the boiler through the second heat source regenerator and the air heating furnace. The boiler also has a gas channel which is communicated with the outside through the second heat source regenerator. The compressor has a circulating working fluid passage through the regenerator, the air heating furnace and the boiler. Connected with the expander, the expander also has a circulating working medium channel that communicates with the compressor through the regenerator and the cooler; the cooler also has a cooling medium channel that communicates with the outside, and the expander is connected to the compressor and transmits power to form dual fuel gas power device.

8. Dual-fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air passage is communicated with the boiler through the second heat source regenerator and the air heating furnace. The boiler also has a gas channel which is communicated with the outside through the second heat source regenerator. The compressor has a circulating working fluid passage through the regenerator, the air heating furnace and the boiler. Connected with the expander, the expander also has a circulating working medium channel that communicates with itself through the regenerator, and then the expander has a circulating working medium channel that communicates with the compressor through the cooler; the cooler also has a cooling medium channel that communicates with the outside, and the expander Connect the compressor and transmit power to form a dual fuel gas power unit.

9. Dual fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air passage is communicated with the boiler through the second heat source regenerator and the air heating furnace. The boiler also has a gas passage that communicates with the outside through the second heat source regenerator. The compressor has a circulating working fluid passage that communicates with the expander through the air heating furnace and the boiler. , the expander also has a circulating working medium channel that communicates with the compressor through the regenerator and the cooler, and then the compressor has a circulating working medium channel that communicates with itself through the regenerator; the cooler also has a cooling medium channel that communicates with the outside, and the expander Connect the compressor and transmit power to form a dual fuel gas power unit.

10. Dual-fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air passage is communicated with the boiler through the second heat source regenerator and the air heating furnace. The boiler also has a gas passage that communicates with the outside through the second heat source regenerator. The compressor has a circulating working fluid passage that communicates with the expander through the air heating furnace and the boiler. After that, the expander has a circulating working medium channel that communicates with itself through the regenerator, and the expander also has a circulating working medium channel that communicates with the compressor through the cooler. After that, the compressor has a circulating working medium channel that communicates with itself through the regenerator; cooling The compressor also has a cooling medium channel to communicate with the outside, and the expander is connected to the compressor and transmits power to form a dual-fuel gas power device.

11. Dual fuel gas power plant, mainly composed of compressor, expander, cooler, air heating furnace, boiler, heat source regenerator, second heat source regenerator and regenerator; external low-grade fuel and air The heating furnace is connected to the outside, and there is an external air channel that is connected to the air heating furnace through the heat source regenerator. The air heating furnace also has a gas channel that is connected to the outside through the heat source regenerator. The air channel is communicated with the boiler through the second heat source regenerator and the air heating furnace. The boiler also has a gas channel that is communicated with the outside through the second heat source regenerator. The compressor has a circulating working medium channel through the air heating furnace, the regenerator and the boiler. After being connected with the expander, the expander has a circulating working medium channel that communicates with itself through the regenerator, and the expander also has a circulating working medium channel that communicates with the compressor through the cooler; the cooler also has a cooling medium channel that communicates with the outside, and the expander Connect the compressor and transmit power to form a dual fuel gas power unit.

12. Dual-fuel gas power plant, in any of the dual-fuel gas power plants described in

Items

1, 3, 5, 6, 8, 10-11, without the cooler and the cooling medium communicating with the outside Channel, the circulating working fluid is renamed as the cooling medium, and the expander has a circulating working medium channel that communicates with the compressor through the cooler and is adjusted to - the expander has a cooling medium channel that communicates with the outside, and the outside has a cooling medium channel that communicates with the compressor. , forming a dual-fuel gas power plant.

13. Dual-fuel gas power plant, in any of the dual-fuel gas power plants described in

Items

2, 4, 7, and 9, the cooler and its cooling medium passage communicating with the outside are eliminated, and the circulating working fluid is removed. Renamed as cooling medium, the expander has a circulating working medium channel to communicate with the compressor through the regenerator and the cooler, and the expansion machine has a cooling medium channel that communicates with the outside through the regenerator, and the outside also has a cooling medium channel and compressor. The engine is connected to form a dual-fuel gas power plant.

14. Dual-fuel gas power plant, in any of the dual-fuel gas power plants mentioned in Items 1-11, adding a dual-energy compressor and replacing the compressor, adding an expansion speed-up machine and replacing the expander, forming Dual fuel steam powerplant.

15. Dual-fuel gas power plant, in any of the dual-fuel gas power plants described in items 1-14, the second heat source regenerator is eliminated, and the external air passage is heated by the heat source regenerator and the air. The furnace is connected to the external air channel, which is connected to the boiler through the second heat source regenerator and the air heating furnace. It is adjusted so that the external air channel is connected to the heat source regenerator and then divided into two paths - the first path is connected to the air heating furnace. , the second path is communicated with the boiler through the air heating furnace; the boiler has a gas channel connected with the outside through the second heat source regenerator, and the boiler has a gas channel connected with the outside through the heat source regenerator to form a dual-fuel gas power device.

16. Dual-fuel gas power plant, which is mainly composed of compressor, expander, cooler, air heating furnace, boiler and heat source regenerator; there is an external air channel which is connected with the heat source regenerator and then divided into two paths - the first The road is connected with the air heating furnace and the second road is connected with the boiler through the air heating furnace; the external low-grade fuel is connected with the air heating furnace, the air heating furnace also has a primary gas channel connected with the boiler, and there is a high-grade fuel channel externally connected with the boiler The boiler and the gas channel are connected to the outside through the heat source regenerator; the compressor has a circulating working fluid channel that communicates with the expander through the boiler, and the expander also has a circulating working fluid channel that communicates with the compressor through the cooler; the cooler also has The cooling medium channel is communicated with the outside, and the expander is connected to the compressor and transmits power to form a dual-fuel gas power device.

Description of drawings:

Fig. 1/15 is a first principle thermodynamic system diagram of a dual-fuel gas power plant provided according to the present invention.

Figure 2/15 is a second principle thermodynamic system diagram of a dual-fuel gas power plant provided according to the present invention.

Figure 3/15 is a third principle thermodynamic system diagram of a dual-fuel gas power plant provided according to the present invention.

Figure 4/15 is a diagram of the fourth principle thermodynamic system of the dual-fuel gas power plant provided according to the present invention.

Fig. 5/15 is the fifth principle thermodynamic system diagram of the dual-fuel gas power plant provided according to the present invention.

Fig. 6/15 is the sixth principle thermodynamic system diagram of the dual-fuel gas power plant provided according to the present invention.

7/15 is the seventh principle thermodynamic system diagram of the dual-fuel gas power plant provided according to the present invention.

Fig. 8/15 is the eighth principle thermodynamic system diagram of the dual-fuel gas power plant provided according to the present invention.

9/15 is the ninth principle thermodynamic system diagram of the dual-fuel gas power plant provided according to the present invention.

10/15 is a tenth principle thermodynamic system diagram of a dual-fuel gas power plant provided according to the present invention.

11/15 is a schematic diagram of an eleventh principle thermodynamic system of a dual-fuel gas power plant according to the present invention.

Figures 12/15 are diagrams of the twelfth principle thermodynamic system of the dual-fuel gas power plant provided according to the present invention.

Figures 13/15 are diagrams of the thirteenth principle thermodynamic system of the dual-fuel gas power plant provided according to the present invention.

14/15 are diagrams of the fourteenth principle thermodynamic system of the dual-fuel gas power plant provided according to the present invention.

Figures 15/15 are diagrams of the fifteenth principle thermodynamic system of the dual-fuel gas power plant provided according to the present invention.

In the figure, 1-compressor, 2-expander, 3-cooler, 4-air heating furnace, 5-boiler, 6-heat source regenerator, 7-second heat source regenerator, 8-regenerator; A-dual energy compressor, B-expansion speed increaser.

Regarding low-grade fuels and high-grade fuels, the following instructions are given here:

(1) Low-grade fuel: refers to fuel with a relatively low maximum temperature (such as adiabatic combustion temperature or constant pressure combustion temperature) that can be formed by combustion products; is a low-grade fuel. From the concept of heat source, low-grade fuel refers to fuel whose combustion products are difficult to form a high-temperature heat source with higher temperature.

(2) High-grade fuel: refers to fuel with a relatively high highest temperature (such as adiabatic combustion temperature or constant-pressure combustion temperature) that can be formed by combustion products; compared with coal gangue, coal slime and other fuels, high-quality coal, Natural gas, methane, hydrogen, etc. are all high-grade fuels. From the concept of heat source, high-grade fuel refers to fuel whose combustion products can form a high-temperature heat source with higher temperature.

The highest temperature (such as adiabatic combustion temperature or constant pressure combustion temperature) that can be formed by combustion products of high-grade fuel after mixing part of low-grade fuel into fuel is higher than that of low-grade fuel; in contrast, the fuel is High-grade fuel - It should be noted that the high temperature heat source formed by this fuel still needs to meet the needs of the thermodynamic cycle.

(3) For solid fuels, the gaseous substances of the combustion products are the core of the heat source and are an important part of the thermal system; while the solid substances in the combustion products, such as waste residue, can be utilized in the heat energy contained in them (utilization process and equipment). It is discharged after being contained in the heating furnace or preheated outside the heating furnace body), and is not listed separately, and its function is not described separately.

(4) Limited by the current technical conditions or material properties and other reasons, especially for the fuels that need to provide the circulating working fluid with a high-temperature heat load through indirect means, their grades should be reduced by the highest temperature that the combustion products can form. It is divided by the temperature after the indirect heat transfer temperature difference is removed; or, it can be divided by the temperature that the circulating working fluid can reach under the current technical conditions - the temperature that the circulating working fluid (working medium) can reach is higher. For high-grade fuel, the lower temperature that the circulating working fluid (working medium) can reach is low-grade fuel.

Detailed ways:

The first thing to note is that in the presentation of structure and process, it will not be repeated unless it is necessary; the obvious process will not be described. The present invention will be described in detail below with reference to the accompanying drawings and examples.

The dual-fuel gas power plant shown in Figure 1/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator and a second heat source regenerator; the external low-grade fuel is communicated with the air heating furnace 4, There is also an external air passage that communicates with the air heating furnace 4 through the heat source regenerator 6, the air heating furnace 4 also has a gas passage that communicates with the outside through the heat source regenerator 6, and a high-grade fuel passage that communicates with the boiler 5 outside. There is an air channel that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas channel that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working medium channel through the boiler 5. Connected with the expander 2, the expander 2 also has a circulating working medium channel that communicates with the compressor 1 through the cooler 3; the cooler 3 also has a cooling medium channel that communicates with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas released from the compressor 1 releases heat to the circulating working fluid that flows through it, and then flows through the second heat source regenerator 7 to release heat to cool down and discharge to the outside; The expander 2 depressurizes and works, flows through the cooler 3 to release heat and cools down, and then enters the compressor 1 to increase the pressure and heat up; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide driving heat load, and the cooling medium passes The cooler 3 takes away the low-temperature heat load, and the work output by the expander 2 provides the compressor 1 and the external power to form a dual-fuel gas power device.

The dual fuel gas power plant shown in Fig. 2/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel communicates with the expander 2 through the regenerator 8 and the boiler 5, and the expander 2 also has a circulating working medium channel that communicates with the compressor 1 through the regenerator 8 and the cooler 3; the cooler 3 also has a cooling medium channel that communicates with the outside. , the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas is released to the circulating working medium flowing through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the regenerator 8 and the boiler 5 gradually. Endothermic temperature rises, flows through expander 2 to depressurize, and flows through regenerator 8 and cooler 3 to gradually release heat to cool down, and then enters compressor 1 to increase pressure and temperature; low-grade fuel passes through air heating furnace 4 and high-grade fuel The driving heat load is jointly provided by the boiler 5, the cooling medium takes away the low temperature heat load through the cooler 3, and the work output by the expander 2 is provided to the compressor 1 and the external power to form a dual-fuel gas power plant.

The dual fuel gas power plant shown in Fig. 3/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel communicates with the expander 2 through the regenerator 8 and the boiler 5. The expander 2 also has a circulating working medium channel through the regenerator 8 and communicates with itself. After the expander 2 has a circulating working medium channel through the cooler 3 and the compressor 1 The cooler 3 also has a cooling medium channel to communicate with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas is released to the circulating working medium flowing through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the regenerator 8 and the boiler 5 gradually. Endothermic temperature rises, enters the expander 2 to depressurize the work to a certain extent, and then flows through the regenerator 8 to release heat and cool down, and then enters the expander 2 to continue depressurization and work; the circulating working medium discharged from the expander 2 flows through the cooler 3 to discharge The heat is cooled down, and then enters the compressor 1 to increase the pressure; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, and the cooling medium takes away the low-temperature heat load through the cooler 3, and the expander 2 outputs the heat load. The work is provided to the compressor 1 and the external power to form a dual-fuel gas power plant.

The dual fuel gas power plant shown in Fig. 4/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel is communicated with the expander 2 through the boiler 5. The expander 2 also has a circulating working medium channel through the regenerator 8 and the cooler 3 and is communicated with the compressor 1. After the compressor 1 has a circulating working medium channel through the regenerator 8 and itself. The cooler 3 also has a cooling medium channel to communicate with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas released from the compressor 1 releases heat to the circulating working fluid that flows through it, and then flows through the second heat source regenerator 7 to release heat to cool down and discharge to the outside; The expander 2 depressurizes and performs work, flows through the regenerator 8 and the cooler 3 to gradually release heat and cool down, enters the compressor 1 to increase the pressure and heat up to a certain level, and then flows through the regenerator 8 to absorb heat and heat up, and then enters the compressor 1 to continue. Boost and heat up; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, the cooling medium takes away the low-temperature heat load through the cooler 3, and the work output by the expander 2 is provided to the compressor 1 and the outside act as power to form a dual-fuel gas power plant.

The dual-fuel gas power plant shown in Figure 5/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. After the channel is communicated with the expander 2 through the boiler 5, the expander 2 has a circulating working fluid channel that communicates with itself through the regenerator 8, and the expander 2 also has a circulating working fluid channel that communicates with the compressor 1 through the cooler 3. After the compressor 1 There is a circulating working medium channel that communicates with itself through the regenerator 8; the cooler 3 also has a cooling medium channel that communicates with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas is released to the circulating working medium flowing through it, and then flows through the second heat source regenerator 7 to release heat to cool down and discharge to the outside; After the machine 2 depressurizes the work to a certain extent, it flows through the regenerator 8 to release heat and cool down, and then enters the expander 2 to continue depressurization and work; the circulating working medium discharged from the expander 2 flows through the cooler 3 to release heat and cool down, and enter the compressor 1 The pressure rises to a certain extent and flows through the regenerator 8 to absorb heat and heat up, and then enters the compressor 1 to continue to increase the pressure and temperature; The medium takes away the low temperature heat load through the cooler 3, and the work output by the expander 2 is provided to the compressor 1 and the external power to form a dual-fuel gas power device.

The dual fuel gas power plant shown in Fig. 6/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator and a second heat source regenerator; the external low-grade fuel is communicated with the air heating furnace 4, There is also an external air passage that communicates with the air heating furnace 4 through the heat source regenerator 6, the air heating furnace 4 also has a gas passage that communicates with the outside through the heat source regenerator 6, and a high-grade fuel passage that communicates with the boiler 5 outside. There is an air channel that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas channel that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working medium channel that is heated by air. The furnace 4 and the boiler 5 are communicated with the expander 2, and the expander 2 also has a circulating working medium channel that communicates with the compressor 1 through the cooler 3; the cooler 3 also has a cooling medium channel that communicates with the outside, and the expander 2 is connected to the compressor 1 and Transmission power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas is released to the circulating working medium that flows through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the air heating furnace 4 and the boiler 5 gradually. Endothermic temperature rises, flows through the expander 2 to depressurize, and flows through the cooler 3 to release heat to cool down, and then enters the compressor 1 to increase pressure and temperature; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5. The heat load, the cooling medium takes away the low temperature heat load through the cooler 3, and the work output by the expander 2 is provided to the compressor 1 and the external power to form a dual-fuel gas power device.

The dual fuel gas power plant shown in Fig. 7/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel is communicated with the expander 2 through the regenerator 8, the air heating furnace 4 and the boiler 5. The expander 2 also has a circulating working medium channel and is communicated with the compressor 1 through the regenerator 8 and the cooler 3; the cooler 3 also has a cooling The medium channel communicates with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas released from the compressor 1 releases heat to the circulating working medium flowing through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the regenerator 8 and the air heating furnace. 4 and the boiler 5 gradually absorb heat and increase the temperature, flow through the expander 2 to depressurize and perform work, and then flow through the regenerator 8 and the cooler 3 to gradually release heat and decrease the temperature, and then enter the compressor 1 to increase the pressure and increase the temperature; the low-grade fuel passes through the air heating furnace. 4 and high-grade fuel jointly provide driving heat load through boiler 5, cooling medium takes away low-temperature heat load through cooler 3, and the work output by expander 2 provides compressor 1 and external power to form a dual-fuel gas power device.

The dual-fuel gas power plant shown in Figure 8/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel is communicated with the expander 2 through the regenerator 8, the air heating furnace 4 and the boiler 5. The expander 2 also has a circulating working fluid channel and is connected to itself through the regenerator 8. After the expander 2 has a circulating working fluid channel through the cooler. 3 communicates with the compressor 1; the cooler 3 also has a cooling medium channel to communicate with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas released from the compressor 1 releases heat to the circulating working medium flowing through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the regenerator 8 and the air heating furnace. 4 and the boiler 5 gradually absorb heat and heat up, enter the expander 2 to depressurize the work to a certain extent, and then flow through the regenerator 8 to release heat and cool down, and then enter the expander 2 to continue depressurization and work; After the cooler 3 releases heat and cools down, it enters the compressor 1 for boosting and heating; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, and the cooling medium passes through the cooler 3 to take away the low-temperature heat load, The work output by the expander 2 provides power to the compressor 1 and the outside to form a dual-fuel gas power plant.

The dual fuel gas power plant shown in Fig. 9/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel is communicated with the expander 2 through the air heating furnace 4 and the boiler 5. The expander 2 also has a circulating working medium channel connected with the compressor 1 through the regenerator 8 and the cooler 3. After the compressor 1 has a circulating working medium channel, which is returned to the compressor 1. The heater 8 communicates with itself; the cooler 3 also communicates with the outside through a cooling medium channel, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas is released to the circulating working medium that flows through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the air heating furnace 4 and the boiler 5 gradually. Endothermic temperature rises, flows through the expander 2 to depressurize and perform work, flows through the regenerator 8 and the cooler 3 to gradually release heat to cool down, and enters the compressor 1 to increase the pressure to a certain degree and then flows through the regenerator 8 to absorb heat and increase the temperature, Then enter the compressor 1 to continue boosting and heating; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, the cooling medium takes away the low-temperature heat load through the cooler 3, and the work output by the expander 2 provides The compressor 1 and the outside are powered to form a dual fuel gas power plant.

The dual fuel gas power plant shown in Figure 10/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel is communicated with the expander 2 through the air heating furnace 4 and the boiler 5. After the expander 2 has a circulating working medium channel to communicate with itself through the regenerator 8, the expander 2 also has a circulating working medium channel through the cooler 3 and the compressor 1. After the connection, the compressor 1 has a circulating working medium channel to communicate with itself through the regenerator 8; the cooler 3 also has a cooling medium channel to communicate with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas is released to the circulating working medium that flows through it, and then flows through the second heat source regenerator 7 to release heat for cooling and external discharge; the circulating working medium discharged from the compressor 1 flows through the air heating furnace 4 and the boiler 5 gradually. Endothermic temperature rises, enters the expander 2 to depressurize the work to a certain extent, and then flows through the regenerator 8 to release heat and cool down, and then enters the expander 2 to continue depressurization and work; the circulating working medium discharged from the expander 2 flows through the cooler 3 to discharge Heat cooling, enter the compressor 1 to increase the pressure and heat up to a certain degree, and then flow through the regenerator 8 to absorb heat and heat up, and then enter the compressor 1 to continue to increase the pressure and heat up; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5. The driving heat load is provided, the cooling medium takes away the low temperature heat load through the cooler 3, and the work output by the expander 2 is provided to the compressor 1 and the external power to form a dual-fuel gas power device.

The dual-fuel gas power plant shown in Figure 11/15 is implemented as follows:

(1) Structurally, it is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; there are low-grade fuel and air heating outside Furnace 4 is communicated with the outside, and there is an external air channel that is communicated with the air heating furnace 4 through the heat source regenerator 6. The air heating furnace 4 also has a gas channel communicated with the outside through the heat source regenerator 6, and a high-grade fuel channel and the boiler 5 are also externally connected. Connected, there is an external air passage that communicates with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, the boiler 5 also has a gas passage that communicates with the outside through the second heat source regenerator 7, and the compressor 1 has a circulating working fluid. The channel communicates with the expander 2 through the air heating furnace 4, the regenerator 8 and the boiler 5. After the expander 2 has a circulating working fluid channel, it communicates with itself through the regenerator 8, and the expander 2 also has a circulating working fluid channel through the cooler. 3 communicates with the compressor 1; the cooler 3 also has a cooling medium channel to communicate with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external low-grade fuel enters the air heating furnace 4, and the first external air flows through the heat source regenerator 6 and enters the air heating furnace 4 after absorbing heat and heating up, and the low-grade fuel and air are mixed in the air heating furnace 4. And burn into high temperature gas, the gas in the air heating furnace 4 releases heat to the other air flowing through it and cools down, and then flows through the heat source regenerator 6 to release heat and cool down and discharge to the outside; the second external air Flow through the second heat source regenerator 7 and the air heating furnace 4 to gradually absorb heat and heat up, and then enter the boiler 5; the external high-grade fuel enters the boiler 5, mixes with the air from the air heating furnace 4 and burns into high-temperature gas, and the boiler 5 generates The high-temperature gas released from the compressor 1 emits heat to the circulating working medium flowing through it, and then flows through the second heat source regenerator 7 to release heat and cool down and discharge to the outside; the circulating working medium discharged from the compressor 1 flows through the air heating furnace 4 and the regenerator. 8 and boiler 5 gradually absorb heat and heat up, enter the expander 2 to depressurize the work to a certain extent, and then flow through the regenerator 8 to release heat and cool down, and then enter the expander 2 to continue to depressurize and work; the circulating working medium discharged from the expander 2 flows. After the cooler 3 releases heat and cools down, it enters the compressor 1 for boosting and heating; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, and the cooling medium passes through the cooler 3 to take away the low-temperature heat load, The work output by the expander 2 provides power to the compressor 1 and the outside to form a dual-fuel gas power plant.

The dual-fuel gas power plant shown in Figure 12/15 is implemented as follows:

(1) Structurally, in the dual-fuel gas power plant shown in Figure 1/15, the cooler 3 and its cooling medium channel communicating with the outside are canceled, the circulating working fluid is renamed as the cooling medium, and the expander 2 has a circulating The working medium channel is adjusted to communicate with the compressor 1 through the cooler 3: the expander 2 has a cooling medium channel that communicates with the outside, and the outside has a cooling medium channel that communicates with the compressor 1.

(2) In the process, compared with the dual-fuel gas power plant shown in Figure 1/15, the difference is that: the external cooling medium flows through the compressor 1 to increase the pressure and temperature, flows through the boiler 5 to absorb heat and heat up, and flows through the expansion The machine 2 is depressurized to perform work, and then discharged to the outside; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, the cooling medium takes away the low-temperature heat load through the in and out process, and the work output by the expander 2 provides The compressor 1 and the outside are powered to form a dual fuel gas power plant.

The dual fuel gas power plant shown in Figure 13 is implemented as follows:

(1) Structurally, in the dual-fuel gas power plant shown in FIG. 1/15 , a dual-energy compressor A is added to replace the compressor 1 , and an expansion speed-up machine B is added to replace the expander 2 .

(2) In the process, compared with the dual-fuel gas power plant shown in Figure 1/15, the difference is that the circulating working medium discharged from the dual-energy compressor A flows through the boiler 5 to absorb heat and heat up, and flows through the expansion to increase the speed. The machine B depressurizes and increases the speed, and flows through the cooler 3 to release heat and cool down, and then enters the dual-energy compressor A to increase the pressure, increase the temperature and reduce the speed; the low-grade fuel is provided through the air heating furnace 4 and the high-grade fuel through the boiler 5. To drive the heat load, the cooling medium takes away the low temperature heat load through the cooler 3, and the work output by the expansion speed up machine B is provided to the dual-energy compressor A and the external power to form a dual-fuel gas power device.

The dual fuel gas power plant shown in Figures 14/15 is implemented as follows:

(1) Structurally, in the dual-fuel gas power plant shown in Figure 6/15, the second heat source regenerator is cancelled, and the external air passage is communicated with the air heating furnace 4 through the heat source regenerator 6 and the external air The passage is communicated with the boiler 5 through the second heat source regenerator 7 and the air heating furnace 4, and is adjusted so that there is an external air passage connected with the heat source regenerator 6 and then divided into two paths—the first path is communicated with the air heating furnace 4, The second path communicates with the boiler 5 through the air heating furnace 4; the boiler 5 has a gas channel to communicate with the outside through the second heat source regenerator 7, and adjusts that the boiler 5 has a gas channel to communicate with the outside through the heat source regenerator 6.

(2) In terms of process, compared with the dual-fuel gas power plant shown in Figure 6/15, the difference is that the gas discharged from the boiler 5 flows through the heat source regenerator 6 to release heat and cool down and then discharge to the outside, and the external air flows through the The heat source regenerator 6 is divided into two paths after absorbing heat and heating up. The first path enters the air heating furnace 4, and the second path flows through the air heating furnace 4 and enters the boiler 5 after absorbing heat and heating to form a dual-fuel gas power plant.

The dual fuel gas power plant shown in Figure 15/15 is implemented as follows:

(1) Structurally, it is a dual-fuel gas power device, which is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler and a heat source regenerator; an external air channel is connected with the heat source regenerator 6 and then divided into Two routes—the first route is communicated with the air heating furnace 4 and the second route is communicated with the boiler 5 through the air heating furnace 4; the external low-grade fuel is communicated with the air heating furnace 4, and the air heating furnace 4 also has an initial gas passage and the boiler 5 is connected, and there is a high-grade fuel channel on the outside that communicates with the boiler 5, and the boiler 5 also has a gas channel that communicates with the outside through the heat source regenerator 6; the compressor 1 has a circulating working fluid channel that communicates with the expander 2 through the boiler 5. 2. There is also a circulating working medium channel that communicates with the compressor 1 through the cooler 3; the cooler 3 also has a cooling medium channel that communicates with the outside, and the expander 2 is connected to the compressor 1 and transmits power.

(2) In the process, the external air flows through the heat source regenerator 6 and then divides into two paths after absorbing heat and heating up—the first path directly enters the air heating furnace 4 to participate in the combustion process, and the second path flows through the air heating furnace 4 and continues to absorb heat and raise the temperature Then enter the boiler 5; the external low-grade fuel enters the air heating furnace 4, and the low-grade fuel and air are mixed in the air heating furnace 4 and burned into a higher temperature primary gas, and the primary gas releases heat from the air flowing through it and then enters Boiler 5; the external high-grade fuel enters the boiler 5, and the high-grade fuel is mixed with the primary gas and air from the air heating furnace 4 and burned into high-temperature gas. The circulating working medium discharged from the compressor 1 flows through the boiler 5 to absorb heat and heat up, flows through the expander 2 to depressurize and perform work, and flows through the cooler 3 to release heat and cool down, and then enters the The compressor 1 is boosted and heated up; the low-grade fuel passes through the air heating furnace 4 and the high-grade fuel passes through the boiler 5 to jointly provide the driving heat load, the cooling medium takes away the low-temperature heat load through the cooler 3, and the work output by the expander 2 is provided to the compressor. 1 and external power to form a dual-fuel gas power plant.

The effect that the technology of the present invention can achieve—the dual-fuel gas power plant proposed by the present invention has the following effects and advantages:

(1) Effectively reduce the irreversible loss of temperature difference during the formation of high temperature heat source, and significantly improve the thermal efficiency of the device.

(2) Low-grade fuel exerts the effect of high-grade fuel, which significantly improves the utilization rate of low-grade fuel converted into mechanical energy.

(3) Directly reducing the input of high-grade fuel, the effect is equivalent to improving the utilization rate of converting high-grade fuel into mechanical energy.

(4) Reducing the compression ratio of the system is conducive to increasing the flow rate of the circulating working medium and is conducive to the construction of a large-load gas power plant.

(5) Improve the value of fuel utilization, reduce greenhouse gas emissions, reduce pollutant emissions, and have outstanding energy-saving and emission-reduction benefits.

(6) The structure is simple and the process is reasonable; the range of fuel selection and use value can be improved, and the energy consumption cost of the device can be reduced.

Claims

The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator and a second heat source regenerator; the external low-grade fuel is communicated with the air heating furnace (4). , there is an air passage outside the heat source regenerator (6) that communicates with the air heating furnace (4), and the air heating furnace (4) and a gas passage are connected to the outside through the heat source regenerator (6), and there are high-grade external The fuel channel is communicated with the boiler (5), and the external air channel is communicated with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel through the second heat source. The regenerator (7) is communicated with the outside, and the compressor (1) has a circulating working medium channel which is communicated with the expander (2) through the boiler (5), and the expander (2) also has a circulating working medium channel through the cooler (3) It is communicated with the compressor (1); the cooler (3) and the cooling medium channel are communicated with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel, which is communicated with the expander (2) through the regenerator (8) and the boiler (5), and the expander (2) also A circulating working medium channel is communicated with the compressor (1) through a regenerator (8) and a cooler (3); the cooler (3) and a cooling medium channel are communicated with the outside, and the expander (2) is connected to the compressor (1). ) and transmit power to form a dual-fuel gas power plant.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel, which is communicated with the expander (2) through the regenerator (8) and the boiler (5), and the expander (2) also After the circulating working medium channel is communicated with itself through the regenerator (8), the expander (2) has a circulating working medium channel that communicates with the compressor (1) through the cooler (3); the cooler (3) also has a cooling medium The passage communicates with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, the compressor (1) has a circulating working medium channel and is connected with the expander (2) through the boiler (5), and the expander (2) also has a circulating working medium channel through the return After the heater (8) and the cooler (3) are communicated with the compressor (1), the compressor (1) has a circulating working medium channel to communicate with itself through the regenerator (8); the cooler (3) also has a cooling medium The passage communicates with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, the compressor (1) has a circulating working medium channel, and the boiler (5) communicates with the expander (2), and then the expander (2) has a circulating working medium channel to return to. The heater (8) is communicated with itself, the expander (2) and the circulating working medium channel are communicated with the compressor (1) through the cooler (3), and then the compressor (1) has a circulating working medium channel through the regenerator ( 8) communicate with itself; the cooler (3) and the cooling medium channel are communicated with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator and a second heat source regenerator; the external low-grade fuel is communicated with the air heating furnace (4). , there is an air passage outside the heat source regenerator (6) that communicates with the air heating furnace (4), and the air heating furnace (4) and a gas passage are connected to the outside through the heat source regenerator (6), and there are high-grade external The fuel channel is communicated with the boiler (5), and the external air channel is communicated with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel through the second heat source. The regenerator (7) is communicated with the outside, and the compressor (1) has a circulating working medium channel, which is communicated with the expander (2) through the air heating furnace (4) and the boiler (5), and the expander (2) also has a circulating working medium. The passage is communicated with the compressor (1) through the cooler (3); the cooler (3) and the cooling medium passage are communicated with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power plant .
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel that communicates with the expander (2) through the regenerator (8), the air heating furnace (4) and the boiler (5). , the expander (2) and the circulating working medium channel are communicated with the compressor (1) through the regenerator (8) and the cooler (3); the cooler (3) and the cooling medium channel are communicated with the outside, and the expander ( 2) Connect the compressor (1) and transmit power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel that communicates with the expander (2) through the regenerator (8), the air heating furnace (4) and the boiler (5). , the expander (2) and the circulating working medium channel are communicated with itself through the regenerator (8), and then the expander (2) has a circulating working medium channel that communicates with the compressor (1) through the cooler (3); (3) There is also a cooling medium channel that communicates with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel that communicates with the expander (2) through the air heating furnace (4) and the boiler (5), and the expander (2) also There is a circulating working medium channel that communicates with the compressor (1) through the regenerator (8) and the cooler (3), and then the compressor (1) has a circulating working medium channel that communicates with itself through the regenerator (8); the cooler (3) There is also a cooling medium channel that communicates with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel through the air heating furnace (4) and the boiler (5) to communicate with the expander (2). There is a circulating working medium channel that communicates with itself through the regenerator (8), the expander (2) and the circulating working medium channel are communicated with the compressor (1) through the cooler (3), and then the compressor (1) has a circulating working medium. The mass channel communicates with itself through the regenerator (8); the cooler (3) and the cooling medium channel communicate with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power plant.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler, a heat source regenerator, a second heat source regenerator and a regenerator; the external low-grade fuel and air heating furnace (4) is connected, and there is an external air passage that communicates with the air heating furnace (4) through the heat source regenerator (6), and the air heating furnace (4) also has a gas passage that is connected to the outside through the heat source regenerator (6). There is also a high-grade fuel channel that communicates with the boiler (5), and an external air channel that communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4), and the boiler (5) also has a gas channel. The second heat source regenerator (7) communicates with the outside, and the compressor (1) has a circulating working medium channel that communicates with the expander (2) through the air heating furnace (4), the regenerator (8) and the boiler (5). Afterwards, the expander (2) has a circulating working medium channel that communicates with itself through the regenerator (8), and the expander (2) and the circulating working medium channel communicate with the compressor (1) through the cooler (3); (3) There is also a cooling medium channel that communicates with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.
The dual-fuel gas power plant is any one of the dual-fuel gas power plants described in claims 1, 3, 5, 6, 8, 10-11, without the cooler (3) and the cooling that communicates with the outside. The medium channel, the circulating working medium is renamed as the cooling medium, and the expander (2) has a circulating working medium channel that is connected to the compressor (1) through the cooler (3) and is adjusted so that the expander (2) has a cooling medium channel and The outside is communicated, and the outside also has a cooling medium channel that communicates with the compressor (1) to form a dual-fuel gas power device.
The dual-fuel gas power plant is any one of the dual-fuel gas power plants described in claims 2, 4, 7, and 9, in which the cooler (3) and the cooling medium channel communicating with the outside are eliminated, and the circulating work is removed. The name was changed to cooling medium, and the expander (2) had a circulating working medium channel through the regenerator (8) and the cooler (3) to communicate with the compressor (1) and adjusted to - the expander (2) had a cooling medium channel The regenerator (7) communicates with the outside, and the outside also has a cooling medium channel that communicates with the compressor (1) to form a dual-fuel gas power device.
The dual-fuel gas power plant is any one of the dual-fuel gas power plants described in claims 1-11, and a dual-energy compressor (A) is added to replace the compressor (1), and an expansion speed-up machine (B) is added. ) and replace the expander (2) to form a dual-fuel steam power plant.
The dual-fuel gas power plant is in any one of the dual-fuel gas power plants described in claims 1-14, without the second heat source regenerator, and connecting the external air passage through the heat source regenerator (6) with the air The heating furnace (4) communicates with the boiler (5) through the second heat source regenerator (7) and the air heating furnace (4) with an external air passage, and is adjusted to have an external air passage and the heat source regenerator (6). ) is connected and divided into two paths—the first path is communicated with the air heating furnace (4), and the second path is communicated with the boiler (5) through the air heating furnace (4); The communication between the heater (7) and the outside is adjusted so that the boiler (5) has a gas channel to communicate with the outside through the heat source regenerator (6) to form a dual-fuel gas power device.
The dual-fuel gas power plant is mainly composed of a compressor, an expander, a cooler, an air heating furnace, a boiler and a heat source regenerator; an external air passage is connected with the heat source regenerator (6) and then divided into two paths - the first One route is communicated with the air heating furnace (4) and the second route is communicated with the boiler (5) through the air heating furnace (4); external low-grade fuel is communicated with the air heating furnace (4), and the air heating furnace (4) also has The initial gas channel is communicated with the boiler (5), the external high-grade fuel channel is communicated with the boiler (5), and the boiler (5) and the gas channel are communicated with the outside through the heat source regenerator (6); The circulating working medium channel is communicated with the expander (2) through the boiler (5), and the expander (2) and the circulating working medium channel are communicated with the compressor (1) through the cooler (3); the cooler (3) also has a cooling The medium channel is communicated with the outside, and the expander (2) is connected to the compressor (1) and transmits power to form a dual-fuel gas power device.